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Permian Magmatism and Metamorphism in the Dent Blanche Nappe: Constraints from field Observations and Geochronology
Swiss J Geosci (2018) 111:79–97 https://doi.org/10.1007/s00015-017-0284-1 Permian magmatism and metamorphism in the Dent Blanche nappe: constraints from field observations and geochronology 1 1,2,3 4 2,5 Paola Manzotti • Daniela Rubatto • Michele Zucali • Afife´ El Korh • 6 7 2 Be´ne´dicte Cenki-Tok • Michel Balle`vre • Martin Engi Received: 25 January 2017 / Accepted: 3 September 2017 / Published online: 23 October 2017 Ó Swiss Geological Society 2017 Abstract In the Dent Blanche Tectonic System, the Mont zircon has metamorphic overgrowths that yield U–Pb ages Morion biotite-bearing granite is a km-scale intrusion of 285 ± 3 Ma and 281 ± 4 Ma, and are thus contempo- preserved in a low-strain volume. Zircon saturation ther- raneous with the intrusion of the granite. The Mont Morion mometry suggests that it crystallised from a melt that granite with its country-rocks of migmatitic biotite-bearing reached about 800 °C. U–Pb zircon and allanite gneiss and amphibolite was thus emplaced at middle geochronology indicates crystallization of the magma in crustal levels while amphibolite facies metamorphism the Permian (290 ± 3 Ma; 280 ± 8 Ma, respectively). affected its country rocks. The magmatic and metamorphic Migmatitic biotite-gneiss and amphibolite are found as record in the Mont Morion area reflects the high-temper- xenoliths within the Mont Morion granite and constitute its ature regime and lithospheric thinning of the Adriatic country-rocks. In two samples of migmatitic biotite-gneiss continental margin during Permian. Keyword Permian magmatism Á Regional HT Editorial handling: E. Gnos. metamorphism Á Allanite Á Zircon Á Sesia-Dent Blanche Electronic supplementary material The online version of this nappes Á Alps article (doi:10.1007/s00015-017-0284-1) contains supplementary material, which is available to authorized users. -
The Great Passes of the Western and Central Alps Author(S): Douglas W
The Great Passes of the Western and Central Alps Author(s): Douglas W. Freshfield Source: The Geographical Journal, Vol. 49, No. 1 (Jan., 1917), pp. 2-22 Published by: geographicalj Stable URL: http://www.jstor.org/stable/1779776 Accessed: 01-06-2016 17:12 UTC Your use of the JSTOR archive indicates your acceptance of the Terms & Conditions of Use, available at http://about.jstor.org/terms JSTOR is a not-for-profit service that helps scholars, researchers, and students discover, use, and build upon a wide range of content in a trusted digital archive. We use information technology and tools to increase productivity and facilitate new forms of scholarship. For more information about JSTOR, please contact [email protected]. Wiley, The Royal Geographical Society (with the Institute of British Geographers) are collaborating with JSTOR to digitize, preserve and extend access to The Geographical Journal This content downloaded from 128.255.6.125 on Wed, 01 Jun 2016 17:12:04 UTC All use subject to http://about.jstor.org/terms 2 THE GREAT PASSES OF expedition, and dispatched her on August 10 to make sure that the survivors (if by that time there were survivors) would be rescued early in October. Sir Ernest Shackleton, however, had persuaded the Chilian Government to give him once more the use of the Yelcho, and on August 30 he reached Elephant Island on the morrow of a great gale which had driven off the pack and allowed the ship to touch the land and take off the whole, party. The confidence we reposed in the skill and resourcefulness of Mr. -
Recollections of an Old Mountaineer Mt C O L
RECOLLECTIONSOFAN OLD MOUNTAINEER •A.v' CO WALTER LARDEN o Q>- RECOLLECTIONS OF AN OLD MOUNTAINEER MT C O L. LO N . lOTO BYALFRBIJ HOLICE S ' RECOLLECTIONS OF AN OLD MOUNTAINEER BY WALTER LARDEN, M.A. II MEMBBB OF THE ALPINB CLUB, AND LATE LF.CTUREU AT THE BOTAL NAVAL ENGINEBRINQ COLLEGE, TEVONPORT The Hille, from whence cometh my help WITH ILLUSTRATIONS LONDON EDWARD ARNOLD 41 AND 43 MADDOX STKEET, BOND STREET 1910 PREFACE I FEAR that I have no good excuse for adding to the many books abeady written about Switzerland. I can hardly hope to ^^Tite in such a way as to make readers feel the mountain air fresh about them ; take a part in the adventurous dehghts of guideless climbing and solitary wandering grow tense under the strain of an ; anxious quarter of an hour ; experience the elation of a successful ascent ; or share that special reward of the toils of the mountaineer,—that utter peace of mind and elevation above all the anxieties and worries of life which descends upon him as he wends homeward, wearied in body but clear and— strong in spirit, after a day spent in the upper world, ' trailing clouds of glory/ So to write is not in the power of many perhaps the very men who ; owe most to the mountains—and surely a tired school- master is one of them ? —are least able to pay their debt by worthy writing ; freshness and spring may be lacking. Still, I am making an attempt. Speaking for myself, I will say that, year after year, I went to the mountains jaded, woiTied, and quite out of heart for next term's work. -
In Memoriam. Reached the Valley When We Were Suddenly Stopped by a Precipice
286 In Memoriam. reached the valley when we were suddenly stopped by a precipice. Owing to the twilight, we did not dare let ourselves down there, and were compelled to return and make an attempt in another place. But darkness coming on, at 11 P.M. we were forced to camp out on a mossy shelf surrounded by dwarf birch trees. We tied ourselves by the rope to a root and, tired as we were, at once fell asleep. After a while we woke up shivering with cold, and tried a bout of wrestling to keep ourselves warm. At 4 A.M. day dawned; we unroped and found a tedious path through the morass, which finally led us down into the valley. ARNE RANDERS-HEEN. [We are much indebted to the writer, and understand that this ascent is possibly the most difficult yet effected in Norway. Ed,itor ' A.J. '] IN MEMORIAM. • JOHN SHORTT. (1839- 1932.) JunGE SHORTT, the doyen of County Court Judges, died at his residence, 36 Buckingham Gate, S.W.1, on Sunday, May 8, after a protracted illness of over two months, during which he underwent two severe operations. He was an LL.B. of Dublin University, and was called to the Bar at the Middle Temple in 1866. Jointly with Henry Godefroi he was the author of The Law of Railway Companies (comprising the Companies Lands and Railway Clauses Consolidation Acts) published in 1869. Author of The Law relating to Works of Literature and Art (comprising the Law of Copyright and Libel) published in 1884. -
Combining Glaciological and Archaeological Methods for Gauging Glacial Archaeological Potential
Published in -RXUQDORI$UFKDHRORJLFDO6FLHQFH± which should be cited to refer to this work. Combining glaciological and archaeological methods for gauging glacial archaeological potential * Stephanie R. Rogers a, , Mauro Fischer a, Matthias Huss a, b a Department of Geosciences, Geography, University of Fribourg, Chemin du Musee 4, 1700 Fribourg, Switzerland b Laboratory of Hydraulics, Hydrology and Glaciology (VAW), ETH Zurich, 8093 Zurich, Switzerland Recent climate changes have led to an increase in the exposure of archaeological remains in frozen environments due to the melting of glaciers and ice patches, and the thawing of permafrost. In some cases, the discovery of glacial archaeological findings has occurred due to chance. In order to avoid the risk of losing exceptional, often organic, cultural remains due to decomposition, systematic and pre- dictive methods should be employed to locate areas of high glacial archaeological potential. Here, we merged archaeological and glaciological methods to create a new type of archaeological prediction model in the field of glacial archaeology. Locational analysis and glaciological modelling were used to highlight current and future areas of archaeological potential in the Pennine Alps, located between Switzerland and Italy. Future glacier area was calculated in 10 year increments until 2100. By 2090, 93% of glacier area is expected to have disappeared. The results from the final model, GlaciArch, provide new insights into future glacial archaeological prospection in the Pennine Alps by narrowing down a study region of 4500 km2 into several manageable square kilometre sites. 1. Introduction present atmospheric warming has caused shrinkage of glaciers and ice caps all over the world (IPCC, 2013). -
Les Hauderes in the Val D'herens in the Valais Region of the Swiss Alps
YORKSHIRE RAMBLERS' CLUB ALPINE MEET 1990 The Meet The fifth YRC Alpine Meet was held between 21st July and 5th August 1990, and was based at Les Hauderes in the Val d'Herens in the Valais region of the Swiss Alps. The following 26 members and guests attended the meet organised this year by Peter Chadwick, who arranged the excellent campsite and coordinated all of the travel and insurance arrangements: Alan Brown (President) Harvey Lamas Ken Aldred David Martindale Roger and Susan Allen J onathan Riley Dennis and Joan Annstrong Arthur and Shirley Salmon Dermis Barker Graham and Barbara Salmon Peter Chadwick David and Elspeth Smith Albert Chapman Mike and Helen Smith John Devenport Richard and Fiona Smith Mike and Marcia Godden Tim Smith David Hick The Location The Val d'Herens is a beautiful, largely unspoilt and uncommercialised valley in the Valais region of Switzerland, running almost due south from Sion in the Rhone Valley. Les Hauderes (l452m) is a small village situated at the junction of the Ferpecle Valley to the south east and the Arolla Valley running to the south west. This area is the most important climbing centre in the Western Pennine Alps, and provides a very wide choice of snow and/or rock peaks at all grades, as well as being an excellent centre for a large number of walks on well marked tracks through Alpine pastures and woodland. It is possible to undertake many walks from the campsite or by using the Postbus or car to take you to the roadheads at Arolla or Ferpecle. -
Scrambles Amongst the Alps in the Years 1860{Protect Edef U00{U00
The Project Gutenberg EBook of Scrambles Amongst the Alps in the years 1860-69 by Edward Whymper This eBook is for the use of anyone anywhere at no cost and with almost no restrictions whatsoever. You may copy it, give it away or re-use it under the terms of the Project Gutenberg License included with this eBook or online at http://www.gutenberg.org/license Title: Scrambles Amongst the Alps in the years 1860-69 Author: Edward Whymper Release Date: October 29, 2012 [Ebook 41234] Language: English ***START OF THE PROJECT GUTENBERG EBOOK SCRAMBLES AMONGST THE ALPS IN THE YEARS 1860-69*** ii Scrambles Amongst the Alps in the years 1860-69 THE CLUB-ROOM OF ZERMATT IN 1864. Scrambles Amongst the Alps In the years 1860-69 By Edward Whymper London J. Murray 1871 Toil and pleasure, in their natures opposite, are yet linked together in a kind of necessary connection.—LIVY. [3] PREFACE. In the year 1860, shortly before leaving England for a long Continental tour, a certain eminent London publisher requested me to make for him some sketches of the great Alpine peaks. At this time I had only a literary acquaintance with mountaineering, and had even not seen—much less set foot upon—a mountain. Amongst the peaks which were upon my list was Mont Pelvoux, in Dauphine. The sketches that were required of it were to celebrate the triumph of some Englishmen who intended to make its ascent. They came—they saw—but they did not conquer. By a mere chance I fell in with a very agreeable Frenchman who accompanied this party, and was pressed by him to return to the assault.